Isuzu fault codes
6,918 codes · 5 vehicle records · 107 ECU records · 0 live-data parameters
Codes 6,918
| Code | Description | Brands | System |
|---|---|---|---|
| P21D6 | Cylinder 8 injector 'B' circuit/open | 12 | Powertrain |
| P21D7 | Cylinder 9 injector 'B' circuit/open | 5 | Powertrain |
| P21D8 | Cylinder 10 injector 'B' circuit/open | 5 | Powertrain |
| P21D9 | Cylinder 11 injector 'B' circuit/open | 5 | Powertrain |
| P21DA | Cylinder 12 injector 'B' circuit/open | 5 | Powertrain |
| P21DB | Compressed Natural Gas (CNG) Injector Line Voltage Low (Cylinder 1) | 19 | Powertrain |
| P21DC | Compressed Natural Gas (CNG) Injector Line Voltage High (Cylinder 1) | 20 | Powertrain |
| P21DD | Reductant heater 'A' current too low | 12 | Powertrain |
| P21DE | Compressed Natural Gas (CNG) Injector Line Voltage Low (Cylinder 2) | 19 | Powertrain |
| P21DF | Compressed Natural Gas (CNG) Injector Line Voltage High (Cylinder 2) | 20 | Powertrain |
| P21E0 | Compressed Natural Gas (CNG) Injector Line Voltage Low (Cylinder 3) | 19 | Powertrain |
| P21E1 | Compressed Natural Gas (CNG) Injector Line Voltage High (Cylinder 3) | 19 | Powertrain |
| P21E2 | Compressed Natural Gas (CNG) Injector Line Voltage Low (Cylinder 4) | 16 | Powertrain |
| P21E3 | Compressed Natural Gas (CNG) Injector Line Voltage High (Cylinder 4) | 16 | Powertrain |
| P21E4 | Cylinder 5 injector 'B' circuit low | 12 | Powertrain |
| P21E5 | Cylinder 5 injector 'B' circuit high | 12 | Powertrain |
| P21E6 | Cylinder 6 injector 'B' circuit low | 12 | Powertrain |
| P21E7 | Cylinder 6 injector 'B' circuit high | 12 | Powertrain |
| P21E8 | Cylinder 7 injector 'B' circuit low | 12 | Powertrain |
| P21E9 | Cylinder 7 injector 'B' circuit high | 12 | Powertrain |
| P21EA | Cylinder 8 injector 'B' circuit low | 12 | Powertrain |
| P21EB | Cylinder 8 injector 'B' circuit high | 12 | Powertrain |
| P21EC | Cylinder 9 injector 'B' circuit low | 5 | Powertrain |
| P21ED | Cylinder 9 injector 'B' circuit high | 5 | Powertrain |
| P21EE | Cylinder 10 injector 'B' circuit low | 5 | Powertrain |
| P21EF | Cylinder 10 injector 'B' circuit high | 5 | Powertrain |
| P21F0 | Cylinder 11 injector 'B' circuit low | 5 | Powertrain |
| P21F1 | Cylinder 11 injector 'B' circuit high | 5 | Powertrain |
| P21F2 | Cylinder 12 injector 'B' circuit low | 5 | Powertrain |
| P21F3 | Cylinder 12 injector 'B' circuit high | 5 | Powertrain |
| P21F4 | Fuel control system 'B' too lean off idle bank 1 | 7 | Powertrain |
| P21F5 | Fuel control system 'B' too rich off idle bank 1 | 6 | Powertrain |
| P21F6 | Fuel control system 'B' too lean off idle bank 2 | 6 | Powertrain |
| P21F7 | Fuel control system 'B' too rich off idle bank 2 | 6 | Powertrain |
| P21F8 | Fuel control system 'B' too lean at idle bank 1 | 6 | Powertrain |
| P21F9 | Fuel control system 'B' too rich at idle bank 1 | 6 | Powertrain |
| P21FA | Fuel control system 'B' too lean at idle bank 2 | 6 | Powertrain |
| P21FB | Fuel control system 'B' too rich at idle bank 2 | 6 | Powertrain |
| P21FC | Fuel control system 'B' too lean at higher load bank 1 | 5 | Powertrain |
| P21FD | Fuel control system 'B' too rich at higher load bank 1 | 5 | Powertrain |
| P21FE | Fuel control system 'B' too lean at higher load bank 2 | 5 | Powertrain |
| P21FF | Fuel control system 'B' too rich at higher load bank 2 | 5 | Powertrain |
| P2200 | NOx Sensor Circuit Bank 1 | 33 | Powertrain |
| P2201 | Input voltage is higher than 360 volts | 30 | Powertrain |
| P2202 | Output voltage is less than 250 volts | 29 | Powertrain |
| P2203 | NOx Sensor Circuit High (Bank 1 Sensor 1) | 31 | Powertrain |
| P2204 | DC/DC converter internal temperature is higher than 90°C | 27 | Powertrain |
| P2205 | NOx Sensor Heater Control Circuit/Open (Bank 1 Sensor 1) | 27 | Powertrain |
| P2206 | NOx Sensor Heater Control Circuit Low Bank 1 | 27 | Powertrain |
| P2207 | NOx Sensor Heater Control Circuit High (Bank 1 Sensor 1) | 27 | Powertrain |
Some brand data is extracted from diagnostic files and may contain manufacturer-specific wording. General SAE J2012 descriptions are used where available.